RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
3,510 results for "Li Si" — page 81 of 176
ZF_5_01 — Autonomous Underwater Vehicles and Ocean Exploration Technology
Ocean exploration technology — from early human-occupied submersibles to modern autonomous underwater vehicles (AUVs) — has progressively opened the deep ocean to scientific investigation, driving transformative discover
ZF_5_13 — Coral Paleontology: Fossil Reefs and Ancient Reef Ecosystems
Reef ecosystems have existed for over 3.5 billion years — beginning with Archean microbial stromatolite mounds — making them among the longest-running biological communities on Earth. Yet the organisms that build reefs h
ZF_5_04 — Aquaculture: Fish Farming, Mariculture, and Blue Revolution
Aquaculture — the farming of aquatic organisms including fish, shellfish, crustaceans, and seaweed — has become the fastest-growing food production sector in the world and now provides more seafood for human consumption
ZF_5_07 — Upwelling Systems: Coastal Productivity and Fisheries Foundations
Upwelling — the wind-driven or current-driven ascent of cold, nutrient-rich deep water to the sunlit surface layer — is the foundation of the ocean's most productive ecosystems and the world's most valuable fisheries. Th
ZF_5_14 — Marine Invertebrate Venoms: Cone Snails, Box Jellyfish, and Blue-Ringed Octopus
The oceans harbor an extraordinary diversity of venomous organisms — from the microscopic nematocysts (stinging cells) of cnidarians to the sophisticated venom injection systems of cone snails, blue-ringed octopuses, and
ZF_4_02 — Ocean Pollution and Plastic Debris
Ocean pollution encompasses the introduction of harmful substances and materials into the marine environment, degrading water quality, damaging ecosystems, and threatening human health. The major categories are: plastic
ZF_4_15 — Ocean Sediments: Deep-Sea Cores, Proxy Records, and Paleoclimate
Ocean sediments are the Earth's most comprehensive climate archive — a continuous record of planetary conditions extending back over 200 million years, slowly accumulated grain by grain on the deep seafloor at rates of m
ZF_1_12 — El Niño and ENSO: Pacific Oscillation and Global Climate Impact
The El Niño–Southern Oscillation (ENSO) is the most powerful year-to-year climate fluctuation on Earth — a coupled ocean-atmosphere phenomenon centered in the tropical Pacific that affects weather patterns, agriculture,
ZF_1_04 — Ocean-Climate Coupling: Paleoceanography
The ocean is Earth's primary climate regulator — absorbing ~93% of the excess heat trapped by greenhouse gases and ~30% of anthropogenic CO₂, storing 50 times more carbon than the atmosphere, and driving glacial-intergla
ZF_1_16 — Paleoceanography and Foraminifera: Reconstructing Ancient Oceans from Microfossil Archives
Paleoceanography — the study of the history of the oceans and their role in Earth's climate system through geological time — relies fundamentally on the geochemical analysis of foraminifera (single-celled protists with c
Z_5_21 — Mobile Genetic Elements: Transposons, Retrotransposons, and Genomic Plasticity
Mobile genetic elements (MGEs) — DNA sequences capable of moving within and between genomes — constitute a staggering ~45% of the human genome, far exceeding the ~1.5% that encodes proteins. Discovered by Barbara McClint
Z_5_02 — Metagenomics and Environmental DNA
Metagenomics — the sequencing and analysis of genetic material recovered directly from environmental samples without culturing organisms — has revealed that the vast majority of Earth's microbial diversity was invisible
Z_3_02 — Epigenetic Inheritance & Transgenerational Effects
Epigenetic inheritance refers to the transmission of phenotypic information across generations through mechanisms other than changes in DNA sequence. The three primary molecular mechanisms — DNA methylation, histone modi
Z_3_09 — Conservation Genetics and Endangered Species
Conservation genetics applies population genetics, genomics, and molecular biology to the preservation of biological diversity. At its core is the recognition that genetic diversity — the raw material for adaptation to c
Z_3_10 — Genetics of Athletic Performance
Athletic performance is a highly polygenic trait with substantial heritability — twin studies estimate heritability of VO2max (maximal oxygen uptake) at ~50% (Bouchard et al., 1999, HERITAGE Family Study), muscle fiber c
Z_3_11 — Genetic Mosaicism and Chimerism
A fundamental assumption of genetics — that every cell in an individual's body carries the same genome — is wrong. Genetic mosaicism (the presence of two or more genetically distinct cell populations within an individual
Z_2_07 — Genetics of Disease Resistance
Infectious disease has been the most powerful selective force shaping the human genome, leaving signatures across thousands of loci. The best-understood example is sickle cell disease (HbS, Glu6Val in HBB): heterozygous
Z_2_05 — Gene Therapy: History and Progress
Gene therapy — the introduction, alteration, or replacement of genetic material within a patient's cells to treat or cure disease — has evolved from a speculative concept to an approved clinical reality over five decades
Z_1_08 — Transposons and Mobile Genetic Elements
Transposable elements (TEs, transposons) — segments of DNA that can move or copy themselves to new genomic locations — are among the most abundant and influential components of eukaryotic genomes. Discovered by Barbara M
Z_1_16 — Transposable Elements: Jumping Genes and Genome Evolution
Transposable elements (TEs) — sequences of DNA capable of moving ("jumping") from one genomic location to another — constitute approximately 45% of the human genome and up to 85% of the maize genome, making them the sing
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